/*
 * Copyright (C) 2004 NNL Technology AB
 * Visit www.infonode.net for information about InfoNode(R) 
 * products and how to contact NNL Technology AB.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, 
 * MA 02111-1307, USA.
 */

// $Id: AbstractButtonIcon.java,v 1.10 2005/02/16 11:28:11 jesper Exp $
package net.infonode.gui.icon.button;

import net.infonode.gui.ComponentUtil;
import net.infonode.util.ColorUtil;

import javax.swing.*;
import java.awt.*;
import java.io.Serializable;

public abstract class AbstractButtonIcon implements Icon, Serializable {
	private static final long serialVersionUID = 1;

	private int size = 10;
	private Color defaultColor = null;
	private boolean shadowEnabled = true;
	private float shadowStrength = 0.3f;
	private boolean enabled = true;

	public AbstractButtonIcon() {
	}

	public AbstractButtonIcon(Color color) {
		this.defaultColor = color;
	}

	public AbstractButtonIcon(Color color, int size) {
		this(color);
		this.size = size;
	}

	public AbstractButtonIcon(int size) {
		this(size, true);
	}

	public AbstractButtonIcon(int size, boolean enabled) {
		this();
		this.size = size;
		this.enabled = enabled;
	}

	@Override
	public int getIconWidth() {
		return size;
	}

	@Override
	public int getIconHeight() {
		return size;
	}

	public boolean isShadowEnabled() {
		return shadowEnabled;
	}

	public void setShadowEnabled(boolean shadowEnabled) {
		this.shadowEnabled = shadowEnabled;
	}

	public float getShadowStrength() {
		return shadowStrength;
	}

	public void setShadowStrength(float shadowStrength) {
		this.shadowStrength = shadowStrength;
	}

	@Override
	public void paintIcon(Component component, Graphics graphics, int x, int y) {
		Color oldColor = graphics.getColor();
		Color color = defaultColor == null ? (enabled ? component.getForeground() : UIManager.getColor("Button.disabledForeground")) : defaultColor;
		if (color == null)
			color = ColorUtil.blend(ComponentUtil.getBackgroundColor(component), component.getForeground(), 0.5f);

		if (shadowEnabled) {
			Color background = ComponentUtil.getBackgroundColor(component);
			graphics.setColor(ColorUtil.blend(background == null ? Color.BLACK : background, Color.BLACK, shadowStrength));
			paintIcon(component, graphics, x + 2, y + 2, x + size - 1, y + size - 1, true);
			graphics.setColor(color);
			paintIcon(component, graphics, x + 1, y + 1, x + size - 2, y + size - 2, false);
		} else {
			graphics.setColor(color);
			paintIcon(component, graphics, x, y, x + size - 1, y + size - 1, false);
		}

		graphics.setColor(oldColor);
	}

	protected void paintIcon(Component component, Graphics graphics, int x1, int y1, int x2, int y2, boolean isShadow) {
		paintIcon(component, graphics, x1, y1, x2, y2);
	}

	protected void paintIcon(Component component, Graphics graphics, int x1, int y1, int x2, int y2) {
	}
}
